Sewing-machine shuttle



(ModeL) R. M. ROSE;

Sewing Machine Shuttle No. 242,224. Patented May 31., 188i.

NITED STATES PATENT OFFICEO REUBEN M. ROSE, OF BROOKLYN, NEIV YORK, ASSIGNOR TO THE GOLD MEDAL SEWING MACHINE COMPANY, OF ORANGE, MASSACHUSETTS.

SEWING-MACHINE SHUTTLE.

SPECIFICATION formingpart of Letters Patent No. 242,224, dated May 31, 1881.

Application filed January 15, 1881. (Model) To all whom it may concern:

Be it known that 1, REUBEN M. RosE, of Brooklyn, county of Kings, and State of New York, have invented a new and useful Improvement in Sewing-Machine Shuttles, of which the following description, in connection with the accompanying drawings, is a specification.

This invention in sewing-machine shuttles IO relates to that class known as bored shuttles, wherein that journal of the bobbin at the rear end of the shuttle is held in a removable tail-piece.

In this my invention the tail-piece is pivoted or hinged directly upon the end of the tension-regulating spring, and the latter is provided with an irregular slot to receive a headed stud which confines the spring to the side of the-shuttle, while that end of the spring nearest the point of the shuttle is controlled by means of an adjusting screw, to thus enable the tension on the shuttle-thread to be nicely regulated.

Figure 1 represen ts, in top view, abored shuttle containing my invention Fig. 2, a view of Fig. 1, looking at it in the direction of the arrow immediatelybelow Fig. 1; and Fig. 3 is a vertical longitudinal section of Fig.1 on the line :0 x.

The body or shell to ofthe shuttle, of usual form, is bored from its heel toward its point to form a chamber, 1), for the reception of the usual bobbin, 0, upon which is wound the shuttle or under thread to be used in the production of the well-known lock-stitch. Thatjournal of the bobbin 0 next the open end or heel of the shuttle is held in a suitable recess in a tail-piece, d-a device common to United States Patent No.154,117, August 18, 1874:.

This tail-piece is directly pivoted or hinged at 2 upon the rear end of the tension-regulating spring 6, which is applied to the upper side of the shuttle. This spring 6 has an irregular slot, 3, (see Fig. 1,) one end of 5 which is of larger diameter than the other, to

enable it to receive a headed stud or pin,f, which, when the said spring is placed upon the said stud and moved into the position Fig. 1, so that the said stud and its head occupy a position at the smallest or narrowest part of the said slot, holds the spring about the stud securely in contact with the body of the shuttle. the headed stud then serving as a fulcrum for the spring 6. The spring 6, near its right-hand end, is bent upward or offset, as at 4, sutiieientl to form aspace for the easy introduction under it of the shuttle-thread.

The adjusting-screw g is extended through a hole in the free end of the spring and screwed into the body of the shuttle. By turning this screw g the free end of the spring may be more or less depressed, to cause that portion of it between the said screw 9 and the stud)" to bear with moreor less force upon the shuttle-thread between it and the body of the shuttle.

Providing the spring with the s.ot3 and the shuttle body with the stud f furnishes very ready means for attaching the spring in position upon the body of the shuttle, and enables me to utilize one end of the springe as a holder for the tail-piece, while the other end is made available for producing the requisite amount of tension upon the thread.

I claim- The shuttle-body provided with the headed stud f, and the tension-spring 6, provided with the slot 3, combined with the tail-piece d, pivoted or hinged upon one end of the said spring, and with the adjusting-screw g to move the end of the said spring toward or from the sh uttle-body, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

REUBEN M. ROSE.

Witnesses FREDK. HAYNES,

A. O. WEBB. 

